Process of treating garbage.



PATENTED AUG. 30, 1904.

A. J. MORSE. PROCESS OF TREATING GARBAGE.

APPLIOATION FILED 0013.29, 1903.

NO' MODEL.

UNITED STATES V Patented August 30, 1904.

PATENT OFFICE.

ALBRO J. MORSE, QF'TBALTIIMORE, MARYLAND.

PROCESS OF TREATING GARBAGE.

SPECIFICATION forming part of Letters Patent No. 769,104, dated Augustso, 1904.

Application filed Oc ober 29, 1903- To all whom, it may c07zce'rn} Be itknown that LALBRo J. MoRsE, a citizen of the United States of America,and a resident of Baltimore city, Maryland, (my postofiice address being3008 W. North avenue,) have invented certain new and useful Improvementsin Processes of Treating Garbage and the Like, of which the following isa specification.

My invention relates to certain new and useful improvements in theprocess of treating garbage and similar refuse; and the object of myinvention is to so treat the garbage or the like that the productresulting from the process will be of greater commercial value thanheretofore and also to carry out the treatment of garbage or the likemore cheaply than heretofore possible. 7

With these objects in view my invention consists in first placing thegarbage in a digester, in which the garbage or other refuse is cooked.None of the water which is in the garbage or which may be added to thegarbage during this cooking operationis allowed to escape. After theoperation in the digester is complete the -tankwater, as it is called,is drawn off, and the solid matter is then pressed to further remove thetank-water. Thetank water is now treated in suitable manner to removeall the grease therefrom. This tank-water contains, however, in solutionand in suspension a great deal of solid matter which is valuable, and inorder to-save this matter the tank-water is returned to the pressedtankage and mixed therewith. The mixture is then passed into a suitabledrier and dried.

By this process all the'solid-matter is removed, and from the garbageunder treatment a fertilizer is produced which is of greater commercialvalue than has heretofore been possible. I

I am aware that it has heretofore been attempted to reclaim thesolidmatter held in solution and suspension in the tank-water byseparately evaporating this tank-water. It has been found, however,that'this is imprac- Serial llo. 178,962. (No specimens.)

able way, as by means of acarrier 2. In this digester the garbage or thelike is cooked in any suitable way. After the cooking operation iscomplete the garbage, which is now called tankage, together with thetank-water, is allowed to-esc'ape from the bottom of the digester andfall onto an endless traveling belt 4, which is driven in any suitableway.

Below the traveling belt is atank 5, into which the tank-water runs asthe digester is emptied. 6 is a 'pipe leading from a suitable pump 7into the tank for the purpose of pumping the tank-water into thegrease-separating box 8. This grease-separator is of any suitable ordesired form. The tank-water is conveyed from the pump to the separatorby means of the pipe 9.

10 is a pressing device, which is shown as composed of the sets ofrollers 11, between which passes an endless belt 12, running on suitabledrums 13. The pressing device is so located in respect to the endlesscarrier 4: that the solid matter taken up-by the carrier will bedelivered onto the belt 12. The tank 5 extends under this pressingdevice, so that it will catch the tank-water squeezed out from the solidmatter. From the pressing device 10 the solid matter is delivered ontoan endless'carrier or belt 14, by which it is carried ling device 17. Asshown, this sprinkling device consists of a horizontal pipe 18,110 whichare connected sprinklers 19, extending across the belt, the sprinklers19 being connected to the pipe 18 by the pipes 20. Located in each ofthe pipes 20 there is preferably a valve 21, so that the amount ofliquid falling through each of the sprinklers may be regulated.

22 is a pipe running from the grease-separator 8 to the pipe 18, andpreferably this pipe is provided With a valve 23 to control the floW ofliquid onto the belt.

The operation of the device has previously been described. By thisprocess the formation of stick, which is produced When the tank-Water isseparately treated, is obviated and a fertilizer is produced which has ahigher percentage of ammonia and Which contains all the solid matter ofthe refuse, and it is therefore possible to obtain a greater quantity offertilizer from a given amount of refuse than has heretofore beenpossible, and the fertilizer itself is more valuable.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The process of treating garbage or the like Which consists in firstcooking the garbage in a suitable digester in its own liquor, removingthe cooked garbage from the digester and separating the same intotankagc and tank- Water, removing the grease from the tank- Water,reuniting the tankage and tank-water and vaporizing the last mixture todryness, thereby a fertilizer is produced.

Signed by me at \Vashington, District of Columbia, this 28th day ofOctober, 1903.

ALBRO J. MORSE.

WVitnesses:

l. M. GoTWALD, FRANCIS M. PHELPS.

